Powerplant (Engines)

Question 1

Time limit for takeoff trust

Answer 1

5min

Question 2

Maximum N1

Answer 2

106%

Question 3

Maximum N2

Answer 3

105%

Question 4

Max EGT takeoff

Answer 4

930 degrees C (940 degrees C 20sec transient)

Question 5

Max cont EGT

Answer 5

895 degrees C

Question 6

Max start

Answer 6

725 degrees C

Question 7

Min oil psi

Answer 7

13

Question 8

Max oil temp

Answer 8

165 degrees C

165-160 degrees C (15 min)

Question 9

Max continuous oil temp

Answer 9

160 degrees C

Question 10

Continuous engine ignition must be on for

Answer 10

Take off, landing and engine anti-ice on

Question 11

Minimum start pneumatic psi

Answer 11

30 (- .5psi per 1000ft AMSL)

Question 12

The PMC makes fuel flow adjustments to the MEC by monitoring

Answer 12

• Thrust lever angle
• Inlet Temp and pressure
• N1 RPM

Question 13

Thrust reverser light indicates

Answer 13

• A disagreement between selector valve and isolation valve
• If one or two reverser levers are not in the commanded position
• Auto restow system has been activated
• Any other time a malfunction has occurred

Question 14

If the reverser light is on for more then 12sec what will illuminate

Answer 14

The MASTER CAUTION and ENG annunciation lights. The delay allows time for completion of the normal stowing cycle

Question 15

What is PMC doing in the on position

Answer 15

The PMC is providing a signal to the MEC to modify N1 for better control of thrust settings (compensates for variations in inlet temp and pressure

Question 16

Low idle light indicates

Answer 16

Insufficient engine RPM (less than 25% inflight)

Question 17

Low idle light is prevented from illuminating when

Answer 17

• Air/ground logic senses on ground condition

- Engine start lever in cutoff position

Question 18

The PMC also provides

Answer 18

• Smooth acceleration
• minimal EGT overshoot
• limited overspeed protection

Question 19

The PMC is powered by

Answer 19

The N2 speed sensor which is an AC generator

Question 20

With the PMC off during takeoff

Answer 20

Engine RPM may increase as speed increases (may be as much as 7%)

Question 21

The two idle speeds are

Answer 21

Low approx 22% N1

High approx 32% N1

Question 22

High idle is used when

Answer 22

For all stages of flight

Question 23

High idle switched to low idle

Answer 23

4 sec after touchdown (delay to enhance engine acceleration for reverse thrust)

Question 24

With a normal electrical failure the engine idle speed does what

Answer 24

Automatically goes to High idle (held in low idle with a solenoid)